Auxiliary intake air valve



Feb. 9 1926. 1,572,842

LE ROY R. BLADES AUXILIARY INTAKE AIR VALVE Filed August ll, 1923 Patented Feb. 9, 1926.

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LIE'. ROY E. BLADES, OF CHICAGO, lILLINOIS,iISVIGrNOiRi,BY v`II I17ECT AND {MESNE AS- sioni/xmms.' To FRANK J, oannv.

AUXILIARY INTAKE Ana VALVE.

Application filed Auustfll, 1923. lSerial No; 656,932.

To all whom', t may concern.'`

Be it known that I, LE ROY Ry. BLADES, a citizen of the United States, residing `at Chicago, in the county of Cook .andState of Illinois, have invented certain. new vand useful Improvements in Auxiliary Intake Air Valves, of which the following scription. Y g v My invention belongs to that general'class of inventions knownas valves, and relates more particularly to an auxiliary intake air valve to be used in connection lwith internal combustion engines for admission of air to the ingoingf charge, as for example, to the intake manifold at apoint between the intake ports and the throttle valve. 1

'Ih-e invention has among its objects the production of a device of the kinddescribed that is simple, convenient, compact, durable, efficient, automatic in operation and satis-- factory for use wherever yfound;applicable.

It has particularly as an object the pro-- duction of an automatic valve which will admit the proper amount of airand 'auto'- matically control the admission of airto con# form with the working 'condition' ofthe engine. v

More particularly ithas as an object lthe production of a `device which will not admit air to the intake when theengine is starting or idling or operating at low speed, but will permit the` admission of air when the engine is speeded up. f

Many other obj ects. an d advantages of, the construction herein shown and `described will, kbe obvious to those skilled in "the art from the disclosures herein given.

To this end my invention consists in the novel construction, arrangement and oombination of parts herein shown and described, and more particularly pointed out in the claims.

In the drawings, wherein like' reference characters indicate like or corresponding parts, l

Fig. l is a si'de elevation of anfengine showing my device installed on the manifold; y

Fig. 2 is a side elevation of my device;

Fig. 3 is a sectional view taken substantially on line 3-3 ofFig. 2; f

is a de- Fig. 4 is a sectional view taken substantially on line 4 4 of. Fig. 2;` i Fig. 5f is ay sectional view taken substan tially on line tif-5 of Fig. 2;

Fig. .6 is a sectional view of a portion o the device similar to Fig. `3 and showing thel parts in their changed positions ;and

Fig. 7 is a` sectional view similar to Fig.

3,*showing a slight modification. `Referring to the drawings, in which the preferred embodiment of my invention is shown, l represents any type ofgas engine provided with the usual carburetor 2 and fuel intake manifold 3, 4 representing the throttle orV butterfly valve ordinarily employed. The engine, carburetor, manifold, etc., `are typical of any of the well known constructions and illustrate the application of my improved device. f

It is wellV known to those skilled in the art thatfwhen running at higher speeds a certain amount of air maj,7 be admitted to the intake manifoldwitho'ut decreasing the efficiency of the charge, but onthe contrary, increasing its efficiency. At low speeds,4 or when starting or idling, it is not desirable, however, to admit air to the manifold, as the same affects the operation of the engine and makes starting hard or may cause the engine to kill. lVhen the engine is running at low speedor idling, there is a greater vacuum in the manifold than when 'the throttle is opened up, and my device is automatically operable so that the greater the vacuum 'in the manifold, the less air is admitted, the same being generally so adjusted that instarting and idling or at low speeds, no air is admitted through the device.

As shown, 6 represents a part mounted on the manifold 3t for example, the same being provided vwith a shank 7 for engagement with a threaded hole through the manifold. The part 6 is provided with a tubular eX- tension portion or sleeve 8 and an outer shell or casing 9 arranged as shown, the latter being preferably threaded on the portion 6. As shown, part 6-8 is constructed with a shoulder ofreduced diameter, as indicated at 10, so as to provide a space between the parts Sand 9. Slidably or telescopically carried by part 8 is a valve member or face part 14, which may seat upon. the end of part 8 when the valve is moved to its in-V ner or closed position.

Arranged to cooperate with the valve is a spring 15, which tends to normally move and maintain the valve in the position shown in Fig. 3 or open so thatair may be adl mitted through the opening 12 to the tubular bored part 6 and be discharged into the manifold, or other point. u

I have shown a cap 5 arranged'on the part 9 adapted to be adjusted so thatv the downward travel of the valve 11 lmay be controlled vand limited by adjusting the cap. A collar 18 may be arranged, as shown, which serves as an abutment with the fcap, and when tightened against the cap, locks the same against accidental displacement. rI he cap is provided withl one or .more openings 16 therethrough of the desired `size-and shape, and if preferred, a piece of wire gauze or the like 17 may be arranged over theopenings to prevent the admission of dust and dirt. j

I have illustrated in Fig. 3 ian annular adjustable `abutment 19 for the endpof the spring 15, the same being provided with a projecting part 20 which extends to the exterior of the shell 9 andcoo'perates with the lock rings 21 and 22. B y adjusting th'e rings 21 and 22 to move the'mem'ber 19, the tension of the spring 15 Vmay be varied as desired.

While not essential, if preferred, 'a stem 23 may be projected through the casing 5, the same permitting manipulation `of the valve without removing the cap, and if the same is provided with ja scale, it 'will serve torindicate the operations of the valve.

In the construction shown in Fig.vr 7 in place of the adjustable abutment 19,1 have illustrated one or more Vwashers 24: 'to be inserted as desired to provide adjustment or regulation of the spring.`

In use, the spring is `so adjusted that when the motor is starting, idling, or travel'- ing at low speed, the 'increasedvacuum in the manifold will tend to move the valve 11 to its closed position so that no airis admitted therethrough to the manifold, but` as the engine is speeded up and the vacuum decreases, the spring 15 will tend to 'move the valve to admit a limited amount off air into the manifold. Further increasing vthe speed in the engine by opening the butterfly valve 4 wil-l cause a still further effective opening in the valve. Immediately upon idling down, however, the valve 'will move toward its closed position.

Obviously, with different types, sizes and engine capacities, my device would be adjusted by means of the cap 5 and the varying of the tension of the spring to produce the most satis-factory yand `eiiicient results.

Having thus described my invention, it is obvious that various immaterial modications may be made in the same without dearting from the spirit of my invention;

ence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and. described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

1. In combination with an intake manifold, `air supply means communicating therewith and operable bysuction therein to vary the amount of air admitted therethrough, said "means comprising a sleeve fixed to said manifold and opening thereinto, a sleeve slidable in said first-mentioned sleeve and having u longitudinal 'slit 'adjacent its outer end, a casing 'around said sleeves and having a port therethrough, said casing comprising 'a 'plurality of members adjustably secured to each other, andl a 'spring for yieldingly holding saidy inner sleeve in its knormal position whereby the increase of suction in the manifold 'will move said inner sleeve against the action yof the spring to vary the effective size yof the yslit opening.

vIn combination with an intake manifold having a throttle 'valve therein, a sleeve adapted to be fixed to said manifold and op'enin'gthereinto, a valve slidably fitting in s'aidisleeve and having an elongated opening at one end, means for normally pressing said valve outwardly of "said sleeve, and a casing enclosing said sleeve and valve 'and having a port through which all air entering said opening must flow, said valve beifng aetuatedby Ithe ysuction in said mani- -o'1d.

3. In combination with an intakev manifold, air supply means communicating therewith and lcomprising a sleeve fixed thereto and communicating therewith, a valve telescopi'c'ally fitting into said sleeve from one end and having its other end slotted, a closure-across 'the slotted end of said valve, a casing enclosing `said sleeve and valve and providing an `abutment for said closure means lin one ldirection and having a port through its wall communicating with said slot, a `spring between said casing'and sleeve and bearing fat one end against saidv closure means to tend to yieldably force the valve away from said fixed sleeve, and means movably carried by lsaid casing and adapted to abut against the other end of said spring for adjusting the tension thereof.

4. In combi-nationA with an intake manifold, a sleeve adapted to be fixed to said manifold and opening thereinto, a Valve slidaloly journaled by said sleeve and having an elongated opening at one end, means for normally pressing said valve outwardly of said sleeve, a easing enclosing said sleeve and valve and having a port through which all air entering sald opening must flow, Said valve being actuated by suction in said manifold, and manually operable means for controlling the effective size of the port.

In testimony whereof, I have hereunto signed my name.

LE ROY R. BLADES. 

